Map Viewing Service (WMS) of the dataset: PPRN hazard zone flooding by overflow of the Charente river of the municipality of Taillebourg in Charente-Maritime

Area exposed to one or more hazards represented on the hazard maps used for risk analysis of the RPP.
Hazard maps are the result of the study of hazards whose objective is to assess the intensity of each hazard at any point in the study area. The evaluation method is specific to each hazard type. It leads to the delimitation of a set of areas on the study perimeter constituting a zoning graduated according to the level of the hazard. The allocation of a hazard level at a given point in the territory takes into account the probability of occurrence of the dangerous phenomenon and its degree of intensity.
For multi-random PPRNs, each zone is usually identified on the hazard maps by a code for each hazard to which it is exposed.

All hazard areas represented on the hazard maps are included. Areas protected by protective structures must be represented (possibly in a specific way) as they are always considered subject to hazard (case of breakage or inadequacy of the structure).
Hazard zones can be described as developed data to the extent that they result from a synthesis using multiple sources of calculated, modelled or observed hazard data. These source data are not concerned by this class of objects but by another standard dealing with the knowledge of hazards.
Some areas within the study area are considered “no or insignificant hazard zones”. These are the areas where the hazard has been studied and is nil. These areas are not included in the object class and do not have to be represented as hazard zones. However, in the case of natural RPPs, regulatory zoning may classify certain areas not exposed to hazard as prescribing areas (see definition of the PPR class).

本对象类涵盖用于反应堆保护设施（RPP）风险分析的灾害地图（hazard maps）中所标注的、遭受一种或多种灾害影响的区域。
灾害地图是灾害专项研究的成果，该研究的核心目标是评估研究区域内任意点位的各类灾害强度。针对不同灾害类型，需采用专属的评估方法，最终在研究范围内划定若干区域，形成按灾害等级分级的区划。
在研究区域内的指定点位进行灾害等级赋值时，需综合考量该危险现象的发生概率及其强度等级。
对于多随机PPRNs而言，每个区域通常会在灾害地图上通过其受影响的各类灾害对应的专属编码进行标识。

所有灾害地图上标注的灾害影响区域均需纳入本对象类范畴。受防护构筑物保护的区域也必须予以标注（可采用特定标注方式），因为即便设有防护构筑物，仍需考虑其破损或防护能力不足时仍会遭受灾害影响的情况。
灾害区域可被视为经整合加工的数据集：其数据来源于对多源计算、建模或观测得到的灾害数据的综合汇总。本对象类不涵盖这些源数据，相关源数据由另一项针对灾害知识的标准进行规范。
研究区域内部分区域被划分为"无灾害或灾害可忽略区域"，即经专项研究确认无灾害发生风险的区域。此类区域不属于本对象类范畴，无需作为灾害区域进行标注。但对于天然RPP而言，监管区划可能将部分未受灾害影响的区域划定为规定管控区域（详见PPR类的定义）。